October 23, 2016 | 01:27
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Cuban microfossils offer support for meteor role in dinosaurs extinction

The paper of the team of Micropaleontology, Alegret et al. (2005) published in Geology, was reported in the New York Times.

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Lecture on dinosaur's extinction

As closure of the Academic Year 2009-2010 at the Universidad de la Experiencia in Calatayud, José Antonio Arz gave a lecture entitled: "The tragic demise of the dinosaurs"

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Confirmed: the Chicxulub impact caused the K/T extinction

Members of the IUCA and the Team of Micropaleontology of the Universidad de Zaragoza, along with 38 other specialists, publish in the prestigious Journal Science a review corroborating the theory that the impact of a large meteorite in the Yucatan peninsula caused the mass extinction event of the Cretaceous/Tertiary boundary. The alternative hypothesis supporting a more gradual extinction due to multiple causes (mainly to the unusual volcanic activity of the Deccan, India) is weakened.

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Zumaya, the open book of the history of Earth for Paleocene Stages

The International Working Group on Paleocene met in Zumaia and decided unanimously to define the boundary stratotypes for the Selandian and Thanetian.

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Micropaleontologists of the University of Zaragoza show that the Mass Extinction of the K/T Boundary was sudden

News appeared in the Spanish version of National Geographic in 2005

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Estratotype Golden Spikes Ceremony in Zumaia

The plates and golden spikes defining the Danian/Selandian and Selandian/Thanetian boundaries were fixed at Zumaia. Many scientists, the Mayor of Zumaia and a Basque Deputy participated in the ceremony. In the photograph Eustoquio Molina, as chairman of the ISPS, unveils the plate defining the Danian/Selandian boundary.

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Lecture on the Chicxulub impact

In the I Jornadas de Paleontología Comarca de Tierras Altas (Soria), José Antonio Arz lectured on "Chicxulub: the death fell from the sky"

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The sea level rise will cause serious problems and even wars

Eustoquio Molina lectured in San Sebastian indicating that the world is overpopulated, people ignores the consequences of climate warming, the sea level rise will cause serious problems and even wars. Many politicians and religious leaders do nothing to stop global warming and because of that are irresponsibles.

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Eustoquio Molina, 2007 Research Award of the Royal Academy of Sciences

Interview in El Periódico with the ocassion of the scientific award.

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A meteorite impact was the cause of the dinosaurs extinction

The extinction coincides with the meteorite impact evidence according to Eustoquio Molina, Ignacio Arenillas and José Antonio Arz.

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Lessons with a natural history book

The joint field trip of Extinction and evolution events and Applied Micropaleontology students to visit several extinction events in Zumaya and the Montxo shipwreck was reported in Diario Vasco.

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Evidence for global cooling in the Late Cretaceous

Temperatures dropped 7 ºC in the last 17 million years of the Cretaceous. Nature Communications published a study based on Tex86 index,  in which we have contributed in the developing an age model from planktonic foraminifera.

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Lecture on the Cretaceous/Tertiary boundary extinction event

In the Miramon Kutxaespacio de la Ciencia (San Sebastian) Eustoquio Molina lectured on "El impacto que acabó con los dinosaurios: evidencias en Zumaia y San Sebastián"

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New causes of the extinction that occurred in the oceans after an asteroid impact 65 million years ago

The study, published by Laia Alegret, Ellen Thomas and Kyger C. Lohmann, shows that the photosynthesis and the food chain in the oceans recovered much earlier than previously suggested. A rapid episode of surface ocean acidification after the impact may have been the main cause of extinction of numerous species, while taxa that lived at the deep sea floor survived.

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Documentary on extinction at Zumaia: Flysch, el susurro de las rocas


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Patterns and causes of evolution and extinction

The group of Micropaleontology, dinosaurs and mammals that research on evolution and extinction is reported in Tercer Milenio of Heraldo de Aragón

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The evidence of the meteorite impact

The team of Micropaleontology of the University of Saragossa confirms that a meteorite impact was the cause that trigered the extinction at the Cretaceous/Tertiary boundary

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The Ypresian/Lutetian Boundary defined

The Ypresian/Lutetian boundary has been defined at meter 167.85 of the Gorrondatxe section, near Bilbao (Spain), in a dark marly level where  the nannofossil Blackites inflatus first occurs, 48 Ma ago.

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The age of the Chicxulub impact under debate

Report in Science & Vie on our results of the study of Yaxcopoil-1 drill hole which support a K/T age for the impact, and on the debate stirred up by the interpretations of the Gerta Keller, which suggest that the impact was 300,000 years before.

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Lecture on the European Geoparks Week 2013

José Antonio Arz gave a lecture in Zumaia entitled: From Zumaia to Mexico: key from extinction of the dinosaurs.

You can listen to the interview on Radio Euskadi in the Webpage:


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Portada del libro 'Micropaleontología'The members of the Team of Micropaleontology of the University of Saragossa constitute the majority of the members of the Consolidated Group of Research EO5: " Extinction and paleoenviroment reconstruction from Cretaceous to Quaternary ", recognized by the Government of Aragon.

Our researches have solved different problems: bio-chronoestratigrafic, paleoecologic, evolutionary and extinction, based on the study of planktic and small benthic foraminifers, mainly from the Upper Cretaceous (Coniacian) to the Lower Neogene (Langhian).

Besides publishing numerous articles in prestigious journals, one of the main publications of the group has been a text book of Micropaleontology, Prensas Universitarias de Zaragoza, which is the only teaching manual that exists nowadays in Spanish.

Sections and drillings studied

Place the mouse on the red dots for more information:
Localization of study sites
© Team of Micropaleontology of the University of Zaragoza / 2008 /
Department of Earth Sciences / Pedro Cerbuna Street, 12 - 50009 ZARAGOZA, SPAIN